[1] Originally double-sided, the front and back of each door have now been separated.

As originally constructed, the doors showed an annunciation scene when open and Saint George and the Princess when closed.

[2] They are rare evidence of the artist's work after he was made court painter in 1456, both in terms of quality and as a fixed point in the chronology of the artist's oeuvre.

He was paid for them on 2 June 1469, as shown by one of the few surviving documents relating to his artistic career.

[3] It shows influences from international Gothic (then prevalent at the court in Ferrara), Piero della Francesca, Mantegna and followers of Francesco Squarcione.